United States Government Publishing Office publisher pbl distributor dst United States National Archives and Records Administration Office of the Federal Register author aut Government Organization text government publication eng FR Regulatory Information 2012_register executive 2012-01-31 article Rules and Regulations D09002ee1c7fd9646 D09002ee1c7fd96d3 United States Department of Transportation originator org United States Government Agency or Subagency United States Federal Aviation Administration originator org United States Government Agency or Subagency We are superseding an existing airworthiness directive (AD) for all RR RB211-535E4-37, -535E4-B-37, -535E4-B-75, and -535E4-C-37 turbofan engines. That AD currently requires performing initial and repetitive visual and fluorescent penetrant inspections (FPI) of the low-pressure (LP) turbine stage 1, 2, and 3 discs to detect cracks in the discs. This new AD continues to require those inspections and changes the definition of a shop visit to be less restrictive. This AD was prompted by our finding that the definition of shop visit in the existing AD was too restrictive. We are issuing this AD to revise the definition of shop visit and to detect cracks in the LP turbine stage 1, 2, and 3 discs, which could result in an uncontained release of LP turbine blades and damage to the airplane. 77 FR 4648 https://www.govinfo.gov/app/details/FR-2012-01-31/2012-1954 2012-1954 fr31ja12-4 RIN 2120-AA64 4910-13-P Docket No. FAA-2009-0994 Directorate Identifier 2009-NE-39-AD Amendment 39-16934 AD 2012-02-11 https://www.govinfo.gov/app/details/FR-2012-01-31/2012-1954 https://www.govinfo.gov/content/pkg/FR-2012-01-31/html/2012-1954.htm https://www.govinfo.gov/content/pkg/FR-2012-01-31/pdf/2012-1954.pdf Air Transportation Aircraft Aviation Safety Incorporation by Reference Safety 3 p. 4648 4650 77 FR 4648 Title 14 Part 39 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Rolls-Royce plc (RR) RB211-535 Series Turbofan Engine; Federal Register Vol. 77, Issue RULE 2012-1954 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 2012-03-06 Docket No. FAA-2009-0994 Directorate Identifier 2009-NE-39-AD Amendment 39-16934 AD 2012-02-11 4910-13-P 2012-1954 Final rule.

We are superseding an existing airworthiness directive (AD) for all RR RB211-535E4-37, -535E4-B-37, -535E4-B-75, and -535E4-C-37 turbofan engines. That AD currently requires performing initial and repetitive visual and fluorescent penetrant inspections (FPI) of the low-pressure (LP) turbine stage 1, 2, and 3 discs to detect cracks in the discs. This new AD continues to require those inspections and changes the definition of a shop visit to be less restrictive. This AD was prompted by our finding that the definition of shop visit in the existing AD was too restrictive. We are issuing this AD to revise the definition of shop visit and to detect cracks in the LP turbine stage 1, 2, and 3 discs, which could result in an uncontained release of LP turbine blades and damage to the airplane.

This AD is effective March 6, 2012. Alan Strom, Aerospace Engineer, Engine Certification Office, FAA, 12 New England Executive Park, Burlington, MA 01803; phone: (781) 238-7143; fax: (781) 238-7199; email: alan.strom@faa.gov. Air Transportation Aircraft Aviation Safety Incorporation by Reference Safety Airworthiness Directives: Rolls-Royce plc RB211535 Series Turbofan Engine , alan.strom@faa.gov http://www.regulations.gov http://www.rolls-royce.com/contact/civil_team.jsp http://www.rollsroyce.com/contact/civil_team.jsp https://www.aeromanager.com Vol. 77, no. 20 Office of the Federal Register, National Archives and Records Administration 2012-01-31 continuing daily deposited born digital 253 p. Table of Contents: AE 2.7: GS 4.107: AE 2.106: KF70.A2 https://www.govinfo.gov/app/details/FR-2012-01-31 P0b002ee181d1a59b 0097-6326 0042-1219 0364-1406 769-004-00000-9 000582072 f:fr31ja12 https://www.govinfo.gov/app/details/FR-2012-01-31 https://www.govinfo.gov/content/pkg/FR-2012-01-31/pdf/FR-2012-01-31.pdf https://www.govinfo.gov/content/pkg/FR-2012-01-31/xml/FR-2012-01-31.xml fdlp 4643 4884 DGPO 2012-01-31 2024-06-03 FR-2012-01-31 machine generated eng FR FR-2012-01-31 77 20